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solution.js
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solution.js
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/**
* @param {number[]} nums
* @return {number[]}
*/
// Moore Voting
var majorityElement = function (nums) {
// 大于三分之一 最多有两个满足条件
// m n 表示候选项
let m, n;
let mCount = 0;
let nCount = 0;
for (let i = 0; i < nums.length; i++) {
if (nums[i] === m) {
mCount++;
} else if (nums[i] === n) {
nCount++;
} else if (mCount === 0) {
m = nums[i];
mCount = 1;
} else if (nCount === 0) {
n = nums[i];
nCount = 1;
} else {
mCount--;
nCount--;
}
}
const oneThird = Math.floor(nums.length / 3);
mCount = 0;
nCount = 0;
// 需要校验一遍是否满足条件
for (let i = 0; i < nums.length; i++) {
if (nums[i] === m) {
mCount++;
} else if (nums[i] === n) {
nCount++;
}
}
const result = [];
mCount > oneThird && result.push(m);
nCount > oneThird && result.push(n);
return result;
};